By Armco



Part # 3550-03

Manufacturer Code SPX540Z2

Dimensions 7.5" X 0.48"

Alternate Part #'s 070945, 3013155, 3013370, 614516, 70945, O172, O472, P11324, SP540Z2, SPX0540Z2, SPX540Z2, 90-423-1172, ALDO-172-0, APCO2031, HAY-301-2086

Product Description

Lens Gasket for Starlite, Duralite, CHD and Poolstar Light Fixture - SPX540Z2

INYO #3550-03 HAYWARD# SPX0540Z2 PENTAIR # 614516

Black rubber lens gasket used on the Hayward Starlite and Duralite and the Purex CHD / Pool Star lights.

This round gasket has a small channel on the inside.

7-7/16" O.D.; 7" I.D. on one side; 6-3/4" I.D. on other side

Product Specifications

Used On:
Hayward Starlite & Duralite Lights SP570 & SP540 Series

?     Asked on 11/23/2021by Michael and Candi Peacock

Hi. Is it possible to use a glue or sealant on 540 z2 gasket and joining surfaces then locking ring to stop water from leaking into fixture. Thank you.

A  Answered on 11/24/2021 by InyoPools Product Specialist Rich N.

We would not recommend that, since it would make servicing the fixture difficult in the future.  We do recommend replacing the gasket each time the light is serviced and using a little lubricant on the new gasket.  This will ensure a good, long-lasting seal and will make any future bulb replacements easy.  

?     Asked on 8/22/2021by James O'Connor

Will this gasket fit a Hayward Pool light, Model #SP0573LN50

A  Answered on 11/5/2021 by InyoPools Product Specialist Stephen B.

Thank you for contacting Inyo pools, Yes gasket Lens Gasket for Starlite, Duralite, CHD and Poolstar Light Fixture - SPX540Z2  is correct.

?     Asked on 8/24/2020by Ernest

Looking a replacement gasket for Hayward SP-540-Z-1. Would this one be a good fit?


A  Answered on 8/24/2020 by InyoPools Product Specialist Lennox H.

Hi, Ernest. This Lens Gasket - SPX540Z2 is the correct replacement.

?     Asked on 7/6/2020by Jonathan Battillo

Hi - Does this work on SP0572LN50 - 300 watt /120 Volt Duralite Series 50F? Thanks for your help.

A  Answered on 11/19/2020 by InyoPools Product Specialist Hector F.

Hi Jonathon, yes this lens gasket is compatible with the Hayward Duralite pool light series. 

?     Asked on 7/14/2019by SPX540Z2 Corcoran

Is this the correct gasket for my Pool Star light replacement? Please see photos, OD on existing gasket measures 7 7/8 "


A  Answered on 7/14/2019 by InyoPools Product Specialist Lennox H.

Hi, David. Yes, this Lens Gasket - SPX540Z2 is the correct replacement. 

?     Asked on 7/7/2019by KJ

I have a hayward sp0583l and need the gasket and the long screw and nut that holds the metal bracket ar oil under the seal. What do I use?

A  Answered on 7/18/2019 by InyoPools Product Specialist Michelle B.

Hello, How many gallons do you have in your pool and what is the max GPM the filter can handle?

?     Asked on 5/24/2019by Johnny

Thank you for the answer on the gasket. what side of the gasket goes against the metal house vs the retainer or doe sit matter.


A  Answered on 5/24/2019 by InyoPools Product Specialist Lennox H.

Hi, Johnny. The flat side goes against the fixture, the side with the lip faces the lens. 

?     Asked on 5/23/2019by Johnny

Would the attached light have use the SPX540Z2 gasket as well


A  Answered on 5/23/2019 by InyoPools Product Specialist Lennox H.

Hi, Johnny. Yes, this gasket will fit the Purex 100-3 model fixture. 

?     Asked on 5/20/2019by Mike

I am trying to find the lens gasket and lens for this Purex Pool Light. The pool light has these numbers on them: Model 100-S Forming Shell # 425 Lamp R40


A  Answered on 5/20/2019 by InyoPools Product Specialist Lennox H.

Hi, Mike. This Lens Gasket - SPX540Z2 is the correct replacement for your model fixture. 

?     Asked on 5/15/2019by roger

I have old pool star light serial #H738982 installed in a 30K gal pool. I have not opened up the fixture and don't know what I need in a replacement bulb or gasket but would like to have them on hand before attempting the replacement. Please point me to the correct gasket and bulb.

A  Answered on 10/10/2019 by InyoPools Product Specialist Steve M.

Roger, we are unable to suggest a replacement bulb without the wattage and voltage of your current light. The serial number did not reference any of that information. Please let us know the wattage and voltage so we can find the correct bulb replacement.

?     Asked on 6/30/2018by Denis

Is this made for the Purex pool light, My light is about 7 1/4 Diameter I cant find any model number anywhere on the it. but my pool was built in 1977 if that helps.

A  Answered on 7/6/2018 by InyoPools Product Specialist Lennox H.

Hi, Denis. This gasket will fit the Purex CHD and Poolstar Fixtures. If you can provide pictures of your fixture, we can try to identify the light. 

?     Asked on 9/1/2017by scott

I've got an ancient CHD Model 100 400w 120v. Could you tell me what replacement bulb and gasket to use? Thanks

A  Answered on 9/5/2017 by InyoPools Product Specialist Lennox H.

Hi, Scott. The 400W Flood R-40 120V - NA704 and this Lens Gasket - SPX540Z2 are the parts you'll need for the CHD Fixture. 

?     Asked on 5/24/2017by Mike

Team...I have a really old light which I restored like new, but needs the gasket. I guess the company is now Pentair, but it is a Purex Model 100-5 (500W). The lens is 7.5" OD. The old gasket wrapped around both sides of the lens, one side seats against the lens, the other side against the ring. Has 6 screws that fastens the ring against the body. This looks like the right gasket. What do you guys think? Big thanks! Mike

A  Answered on 5/26/2017 by InyoPools Product Specialist Lennox H.

Hi, Mike. The Purex company only manufactured two model light fixture and both of them uses this (SPX540Z2) size lens gasket. This lens gasket will fit your Purex 100-5 light fixture.

?     Asked on 4/26/2017by Inyo Visitor

I am trying to replace the gasket on a Hayward SP-573L. Will this fit?

A  Answered on 4/27/2017 by InyoPools Product Specialist Scott W.

Yes, that is the correct gasket for your Hayward DuraLite.

?     Asked on 10/18/2016by Jerry

My older pool light fixture is Pentair. The ring has 61-4600 on it. The glass lens is 8" in diameter. The old gasket is 7 3/4" in diameter. Do you have the replacement for this gasket? I also need a 100W 12V bulb. Thanks. Jerry

A  Answered on 10/18/2016 by InyoPools Product Specialist Megan C.

The part number for the clamp cross references to the Pac Fab Hatteras Pool Light. The original lens has been replaced with the Lens, Clear (spx0540z1) and will use the Gasket Lens Hatteras (614516). The replacement bulb is the Bulb, 12v 100w Flood (br30cl100/12v)

?     Asked on 8/8/2016by Jack Jozewicz

Is gasket SPX540Z2 proper replacement for PUREX pool light housing Model 425?

A  Answered on 8/19/2016 by InyoPools Product Specialist Stacey M.

Hello Jack, yes that would be a proper replacement, most parts for Purex are obsolete, but you can replace most parts by the equivalent Pentair Amerlite

?     Asked on 10/14/2014by Guest

I see a small bead on one side of this replacement gasket. Does the bead go against the rim of the fixture or facing out toward the water side of the len

A  Answered on 10/14/2014 by InyoPools Product Specialist Patrick P.

This gasket wraps around the lens. As long as it is on evenly and on a cleaned off lens then it does't matter because as its clamped on the seal will be created.


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